Could've been better.
First off, nix the buttons that don't say what they are until waiting three seconds to appear at the title screen. Also, I don't like the pronunciation 'Balamb' and 'Quistis Trepe.' On the same note, Sephiroth, Tidus and Wakka never swear. Next, half the voices are good, but the other half are horrible, namely Wakka. Even for an impression it really sounds nothing like him. The direction felt very poor, as many times there would be a large unnecessary pause between lines. Lip synching was just as bad, along with the multiple traced images. It's just like any other horrible NG submission only with some time and energy put into it. So what IS original in this? Nothing, probably.
The secret scene is dumb and makes no sense. I hope you purchased Advantage's album for that song.
"Oh god I have to sit through Supernova again."